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    Area of Science:

    • Biomedical Engineering
    • Medical Imaging
    • Ultrasound Technology

    Background:

    • Real-time 3-D intracardiac echocardiography (ICE) is crucial for visualizing cardiac structures like pulmonary vein antra and valve annuli.
    • Traditional 2-D matrix arrays are difficult to integrate into intravenous catheters for ICE.
    • Helicoid array transducers offer a potential solution by enabling 3-D imaging with a twisted linear array design.

    Purpose of the Study:

    • To investigate the 3-D imaging capabilities of helicoid array transducers for intracardiac echocardiography.
    • To evaluate the impact of varying transducer parameters, such as twist rate and sub-aperture size, on imaging performance.
    • To provide design considerations for optimizing helicoid arrays for volumetric cardiac imaging.

    Main Methods:

    • Simulations were performed using Field II software to model helicoid array transducer performance.
    • Experimental measurements were conducted to validate simulation results.
    • Analysis focused on varying key parameters like twist rate and sub-aperture size.

    Main Results:

    • The study characterized the 3-D imaging properties of helicoid array transducers.
    • Results demonstrated the influence of twist rate and sub-aperture size on imaging outcomes.
    • The findings support the feasibility of using helicoid arrays for enhanced ICE.

    Conclusions:

    • Helicoid array transducers show promise for advancing real-time 3-D ICE.
    • Optimization of transducer parameters is key for effective volumetric cardiac imaging.
    • This technology could lead to improved diagnostic capabilities in cardiology.